Thursday, February 07, 2013

Historic Nor'Easter for New England - snowstorm for southern Quebec/Ontario

Winter Storm Warning: Montreal south to the US border. (including Vaudreuil/Dorion)
Blowing Snow Warning: Montreal - Laval points north and east.

NOAA image of twin low pressure areas converging on New England.
This will be an historic storm in places just not in southern Quebec or Ontario. It will however be a snowstorm. Here is the break down as it stands at 6:30 pm this evening. Low pressure near Chicago will move east towards Lake Erie and pass south of the region. It will begin to interact with a moist rapidly developing storm over the Gulf of Mexico as it moves northeast towards Long Island. The system will deepen rapidly into a major blizzard for southern and interior New England. Strong winds up to hurricane force (74mph) and 1 to 2 feet (30-60cm) of snow is forecast for those areas.

Locally we have a winter storm warning in effect from the south shore of Montreal to the US border and southwest along the St. Lawrence River to Lake Ontario and the GTA. Storm totals from Montreal south will be in the 10-20cm (4-8 inch) range. From Montreal north more like 5-15cm (2-6 inch). All regions will have very cold temperatures and strong northeast winds creating dangerous windchill values and blowing snow reducing visibility to under 1km at times. This storm will have disruptive effects on air travel across the entire east as well as road travel south and southwest of Montreal. Travel in those areas is not advised on Friday. If you have a flight to Toronto, New York or Boston, call ahead.

That is it for now I will update more details later on this evening.

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